<?
/**
 * This file is part of XNAT light.
 *
 * XNAT light is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * XNAT light is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with XNAT light.  If not, see <http://www.gnu.org/licenses/>.
 */
namespace NRG\Exceptions;

use NRG\Framework\Exceptions\BaseException as BaseException;

/**
 * Access control list exception
 *
 * @package NRG\Exceptions
 */
class ACLException extends BaseException
{
    /**
     * No project
     *
     * @var int
     */
    const NO_PROJECT = 0;

    /**
     * Insufficient access
     *
     * @var int
     */
    const NO_ACCESS = 1;

    /**
     * Exception type
     *
     * @var int
     */
    protected $_type;

    /**
     * Exception message
     *
     * @var string
     */
    protected $_message;

    /**
     * Constructor
     *
     * @param int $type
     */
    public function __construct($type)
    {
	$this->_type = $type;
    }

    /**
     * Get exception type
     *
     * @return int
     */
    public function getType()
    {
	return $this->_type;
    }

    /**
     * Get exception message
     *
     * @var string
     */
    public function getMessage()
    {
	switch($this->_type)
	{
	    case self::NO_PROJECT:
		$this->_message = "no project associated with object";
		break;
	    case self::NO_ACCESS:
		$this->_message = "insufficient access to object";
		break;
	    default:
		$this->_message = "unknown ACL exception";
		break;
	}

	return $this->_message;
    }

    /**
     * To string method
     *
     * @return string
     */
    public function __toString()
    {
	return $this->getMessage();
    }
}
